US5836250A - Device and method to clean cylinder surfaces in rotary printing presses - Google Patents

Device and method to clean cylinder surfaces in rotary printing presses Download PDF

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Publication number
US5836250A
US5836250A US08/854,233 US85423397A US5836250A US 5836250 A US5836250 A US 5836250A US 85423397 A US85423397 A US 85423397A US 5836250 A US5836250 A US 5836250A
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US
United States
Prior art keywords
cleaning
tube
cylinder
cleaning cloth
wick
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/854,233
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English (en)
Inventor
Joachim Herrmann
Kurt Lotsch
Ralf Degner
Hendrik Stemmler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Assigned to HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT reassignment HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEGNER, RALF, STEMMLER, HENDRIK, HERRMANN, JOACHIM, LOTSCH, KURT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/24—Wiping devices using rolls of cleaning cloth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/50—Selection of materials or products for cleaning

Definitions

  • the present invention relates generally to a device to clean the cylindrical surface of a cylinder in a rotary printing press.
  • a cleaning cloth can be pressed against the cylinder surface, and the cleaning cloth can also be paid off a supply roller.
  • the cleaning cloth can be wetted with a cleaning fluid, which cleaning fluid can be fed via a cleaning agent storage mechanism.
  • a known device is disclosed in U.S. Pat. No. 2,525,982.
  • a wick which has a metal support body in its interior is used to press the cleaning cloth against the cylindrical surface of the cylinder to be cleaned.
  • a housing is necessary to feed the cleaning fluid.
  • German Patent No. 16 11 191 A1 Another known device is disclosed in German Patent No. 16 11 191 A1. It also uses a cleaning agent storage mechanism made of spongy material, which spongy material is immersed in the cleaning fluid. Using this cleaning agent storage mechanism, a large quantity of fluid is transferred to a roller and removes the particles of dirt from the roller. The result is that the pores of the cleaning agent storage mechanism can become clogged, as a result of which the amount of cleaning fluid delivered is reduced.
  • the object of the present invention is to create a device to relatively uniformly distribute the smallest possible quantity of cleaning fluid over the width of the cleaning cloth, thereby resulting in more economical operation.
  • the present invention teaches that this object can be achieved if, ahead of the cleaning area, corresponding to the cleaning cloth and across the width of the cleaning cloth, there is preferably a feed tube for the cleaning fluid.
  • the feed tube can carry, in a possible embodiment, a felt wetting pad as the cleaning agent storage mechanism.
  • the felt wetting pad can be wetted with cleaning fluid by means of discharge openings in the feed tube, and the felt wetting pad can be pressed relatively briefly against the cleaning cloth.
  • This device can require only a relatively small amount of cleaning fluid to supply the felt wetting pad.
  • a sufficient quantity of cleaning fluid can be transferred to the cleaning cloth and the length of time the felt is pressed against the cleaning cloth can determine the amount of cleaning fluid to be transferred. Therefore, essentially because the cleaning cloth wetted can always be clean, essentially no particles of dirt can be transferred to the felt wetting pad. Therefore, it can also be possible to relatively accurately determine the quantity of cleaning fluid to be dispensed.
  • the wetting pad or wick can be pressed against a portion of the cleaning cloth that has not yet reached the cylinder to be cleaned.
  • the dirt and/or ink transferred to the cleaning cloth when the cleaning cloth moves across the cylinder can be downstream of the wetting pad or wick. Therefore the wetting pad or wick can essentially contact the clean cleaning cloth to transfer cleaning fluid to the cleaning cloth, and the wetting pad or wick can substantially remain free of the dirt and/or ink transferred to the cleaning cloth.
  • the wick or pad can be a felt wetting pad, that is, made of felt.
  • the feed tube can have clamps.
  • the felt wetting pad can be clamped in the clamps.
  • the pad can cover the discharge openings for the cleaning fluid.
  • the felt wetting pad can be replaced relatively easily. It can be essentially guaranteed that no fluid will unintentionally drip out of the discharge openings for the cleaning fluid, which dripping can result in changes, for example, in the amount of ink to be fed in the inking unit.
  • the feed tube can be mounted on pivots by means of swivelling or pivoting levers so that the feed tube can pivot.
  • the feed tube can be made to pivot by means of an actuator. In this manner, the felt wetting pad can be relatively easily placed in contact with the cleaning cloth and can be relatively easily removed from contact with the cleaning cloth.
  • the present invention also teaches that to change the felt wetting pad, the felt wetting pad can be fastened by means of clamps. When the felt wetting pad becomes worn, a new felt pad strip can be inserted.
  • invention includes “inventions”, that is, the plural of "invention”.
  • invention the Applicants do not in any way admit that the present application does not include more than one patentably and non-obviously distinct invention, and maintains that this application may include more than one patentably and non-obviously distinct invention.
  • disclosure of this application may include more than one invention, and, in the event that there is more than one invention, that these inventions may be patentable and non-obvious one with respect to the other.
  • FIG. 1 shows a cross section through a device made in accordance with the present invention
  • FIG. 2 shows an overhead view of a portion of the device
  • FIG. 3 shows an alternative embodiment of a device made in accordance with the present invention
  • FIG. 4 shows another embodiment of a device made in accordance with the present invention.
  • FIG. 5 shows yet another embodiment of a device made in accordance with the present invention.
  • a cleaning cloth 2 can be unwound from a feed roller 101 (see FIG. 3), and the cleaning cloth 2 can be guided over a cylindrical surface 1 of a cylinder 121 (see FIG. 3).
  • the cleaning area of the cleaning cloth 2 can be pressed against the cylinder surface 1, to remove particles of dirt from the cylinder surface 1.
  • a feed tube 4 for holding cleaning fluid.
  • the feed tube 4 can extend essentially across the entire width of the cleaning cloth 2.
  • the feed tube 4 can carry a felt wetting pad 5.
  • the felt wetting pad 5 can cover discharge openings 6 for the cleaning fluid. A precisely measured quantity of cleaning fluid can be fed to the felt wetting pad 5 via the discharge openings 6, thereby wetting the felt wetting pad 5.
  • the felt wetting pad 5 can preferably extend over the width of the cleaning cloth 2, the width of which cleaning cloth 2 can in turn correspond to the length of the cylinder surface 1.
  • the felt wetting pad 5 can be removably clamped to the feed tube 4 by means of clamps 7.
  • the felt wetting pad 5 can preferably cover the discharge openings 6, so that no cleaning fluid can escape or drip out accidentally.
  • the feed tube 4 can be advantageously mounted so that the feed tube 4 can preferably swivel by means of swivelling levers 8 on pivots 9, which pivots 9 can in turn preferably be located in side pieces 10.
  • the feed tube 4 can be supplied with cleaning fluid by means of a feed line 11 (see FIG. 2).
  • An actuator 12 can preferably be engaged with each swivelling lever 8, so that the felt wetting pad 5 can be placed in contact with the cleaning cloth 2 for a specified length of time, thereby wetting the cleaning cloth 2 so that a cleaning cycle can take place.
  • the actuator 12 can be fastened to a side piece 10.
  • the actuator 12 can be actuated by a respective controller or control program 111 (see FIG. 3).
  • the actuator 12 can be an electric lifting magnet, for example.
  • the actuator 12 can be a solenoid.
  • the outer cylindrical surface 1 of the cylinder 121 can be cleaned by the cleaning cloth 2 (corresponding features of FIGS. 1-3 have corresponding reference numerals).
  • the cleaning cloth 2 can be unwound from the feed roller 101 and can travel from the feed roller 101, across the cylinder surface 1 to clean the cylinder surface 1.
  • the application strip 3 can press the cleaning cloth 2 against the cylinder surface 1 to remove particles of dirt or ink from the cylinder surface 1.
  • the cleaning cloth 2 can be unwound from the feed roller 101 and be wound on a take-up roller 103. Because the feed roller 101 and take-up roller 103 are known, a detailed description of these rollers 101 and 103 will not be given.
  • the rollers 101 and 103 can form an arrangement to supply cloth of the cleaning cloth 2 to the cylinder surface 1 from the feed roller 101, and to receive cloth of cleaning cloth 2 onto the take-up roller 103.
  • the cleaning cloth 2 can be divided into an upstream portion 105, which upstream portion 105 has yet to contact the cylinder surface 1, and a downstream portion 107, which downstream portion 107 has contacted and cleaned the cylinder surface 1.
  • the upstream portion 105 can be considered “clean” cloth, and the downstream portion 107 can be considered “dirty” cloth, having possibly picked up dirt and/or ink residue from contact with the cylinder surface 1.
  • the feed roller 101 can be considered to be located upstream of the cylinder surface 1 and the take-up roller 103 can be considered to be located downstream of the cylinder surface 1.
  • the cleaning cloth 2 can be a continuous length or loop of cloth (corresponding features of FIGS. 1-4 have corresponding reference numerals).
  • the cleaning cloth 2 can repeatedly or continuously be passed or looped between the feed roller 101 and the take-up roller 103.
  • the cleaning cloth 2 can clean the cylinder surface 1 after leaving the feed roller 101 and prior to reaching the take-up roller 103 in a manner corresponding to that of the embodiments shown in FIGS. 1-3.
  • the cleaning cloth 2 can then return from the take-up roller 103 to the feed roller 101, preferably via a cloth cleansing device 109.
  • the cleansing device 109 can cleanse the "dirty" cloth and return the cloth to an essentially “clean” cloth to the feed roller 101. Because cleansing devices are known, a detailed description of cleansing device 109 is omitted.
  • the feed tube 4 can be supplied cleaning fluid from a cleaning fluid reservoir 113 (corresponding features of FIGS. 1-5 have the same reference numerals).
  • a control unit or controller 115 can control or meter the flow of cleaning fluid from the cleaning fluid reservoir 113 to the feed tube 4.
  • the feed tube 4 can be located upstream of the application strip 3, and can preferably be disposed between the application strip 3 and the feed roller 101.
  • the feed tube 4 can contain discharge openings 6 to provide preferably the measured discharge of cleaning fluid from the feed tube 4 to the wick or absorbent pad or wetting pad 5.
  • the control unit 115 can in effect control the flow of cleaning fluid from the cleaning fluid reservoir 113 to the wetting pad 5 (see FIG. 5).
  • the wick or wetting pad 5 can preferably be made of felt.
  • the application strip 3 can be movable to engage and disengage the cleaning cloth 2 against the outer cylindrical surface 1.
  • the feed tube 4 can be located upstream of the application strip 3.
  • the feed tube 4 can be mounted on levers 8.
  • the levers 8 can be pivotally mounted on pivots 9, the pivots 9 locating a corresponding pivoting axis 119.
  • the levers 8 can pivot about the pivots 9 to engage and disengage the wetting pad 5 with the cleaning cloth 2 upstream of the application strip 3.
  • the wetting pad 5 can be pivoted towards the cleaning cloth 2 to contact the cleaning cloth 2 and thereby transfer absorbed or retained cleaning fluid discharged through or metered from the discharge openings 6 to the cleaning cloth 2.
  • the control unit 115 (see FIG. 5) can control the flow of cleaning fluid from the cleaning fluid reservoir 113 (see FIG.
  • the wetting pad 5 preferably contacts the cleaning cloth 2 upstream of the application strip 3, the wetting pad 5 can be substantially prevented from contacting the ink or dirt subsequently transferred from the outer cylinder surface 1 to the cleaning cloth 2 after engaging the cylinder surface 1.
  • the wetting pad 5 can transfer cleaning fluid to the "clean" portion 105 of cleaning cloth 2 and can avoid contact with the "dirty” portion 107 of cleaning cloth 2.
  • the wetting pad 5 can therefore remain free of contamination from ink or dirt transferred from the outer cylindrical surface 1 to the cleaning cloth 2, and the wetting pad 5 can essentially remain clean throughout the operating life of the wetting pad 5.
  • the contact of the wetting pad 5 with the cleaning cloth 2 can preferably occur sufficiently upstream from the application strip 3 so that the wetting pad 5 may not press the cleaning cloth 2 against the outer cylindrical surface 1.
  • the wetting pad 5 may thereby press or bear against an unsupported portion 117 of the cleaning cloth 2.
  • Such an arrangement may be relatively tolerant of the engaged position of the wetting pad 5, because the inherent resiliency or stretch of the cleaning cloth 2 can accommodate variations in the engaged position of the wetting pad 5. Therefore, tolerances in the manufacture and construction of the various component parts may be relaxed in comparison to known devices.
  • the wetting pad 5 were to directly press the cleaning cloth 2 against the outer cylindrical surface 1, that is, the wetting pad 5 were to press a portion of the cleaning cloth 2 between itself (wetting pad 5) and the cylinder surface 1, the wetting pad 5 could be pressing the cleaning cloth 2 against a relatively unyielding object, that is, cylinder 121. Therefore, excessive movement of the wetting pad 5 towards the outer cylinder surface 1 in such a device may excessively compress the wetting pad 5.
  • the excessive compression of the wetting pad 5 may squeeze or wring out cleaning fluid from the wetting pad 5, and may make control of the metering of cleaning fluid or the volume of cleaning fluid retained by the wetting pad 5 more difficult. Therefore, tolerances in the manufacture and construction of the various component parts may need to be more stringent as compared to a device that does not press the wetting pad 5 directly against the cylinder surface 1.
  • the wetting pad 5 can be made from absorbent material to absorb and retain cleaning fluid from the feed tube 4.
  • the absorbent material can, besides felt, possibly include sponge, resilient resin, fabric, or molleton.
  • Other absorbent materials could be used so as to be compatible with a particular cleaning fluid used, or to satisfy other design requirements of a particular embodiment of the present invention.
  • One feature of the present invention resides broadly in the device to clean the cylindrical surface of cylinders in rotary printing presses with a cleaning cloth which can be pressed against the cylindrical surface of the cylinder and is wound off a supply roller, whereby to increase the effectiveness of the cleaning action, the cleaning cloth is wetted with a cleaning fluid which can be fed via a cleaning agent storage mechanism, characterized by the fact that located ahead of or in front of or upstream of the area to be cleaned, corresponding to the cleaning cloth 2 there is a feed tube 4 for the cleaning fluid which extends over the entire width of the cleaning cloth 2, which feed line carries a felt wetting pad 5 which acts as the cleaning medium storage mechanism and which is wetted with cleaning fluid by means of discharge openings 6 in the feed tube 4, and that the wetting felt pad 5 can be pressed briefly against the cleaning cloth 2.
  • Another feature of the invention resides broadly in the device characterized by the fact that the feed tube 4 carries clamps 7 in which the felt wetting pad 5 is clamped so that it covers the discharge openings 6 for the cleaning fluid.
  • Yet another feature of the invention resides broadly in the device characterized by the fact that the feed tube 4 is mounted on pivots 9 so that it can pivot by means of swivelling levers 8 and is pivoted by means of an actuator 12.
  • Still another feature of the invention resides broadly in the device characterized by the fact that the felt wetting pad is replaceably fastened in the clamp 7.
  • Example devices for cleaning cylinder surfaces in printing presses or rotary printing machines which could be adapted for use in the context of the present invention, and which example devices illustrate other components that can possibly be used in conjunction with the present invention, can be disclosed by the following U.S. patents, each assigned to the assignee of the present invention: U.S. Pat. No. 5,174,209, No. 5,375,522, No. 5,365,849 and No. 5,452,660.
  • actuators, solenoids, controllers and control circuits adaptable for use in the context of the present invention, can be found in the following publications: Design of Automatic Machinery, copyright 1985 and authored by Kendrick W. Lentz, Jr., published by Van Nostrand Reinhold Company Inc. and having ISBN number 0-442-26032-6 and Library of Congress Catalog Card Number 84-3513; and Pneumatics and Hydraulics, fourth edition, copyright 1984, authored by Harry L. Stewart and revised by Tom Philbin, published by the Bobbs-Merrill Company, Inc. and having ISBN Number 0-672-23412-2.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US08/854,233 1996-05-11 1997-05-09 Device and method to clean cylinder surfaces in rotary printing presses Expired - Fee Related US5836250A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619143.2 1996-05-11
DE19619143A DE19619143B4 (de) 1996-05-11 1996-05-11 Vorrichtung zum Reinigen von Zylindermantelflächen in Rotationsdruckmaschinen

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US5836250A true US5836250A (en) 1998-11-17

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US (1) US5836250A (enExample)
JP (1) JPH1044383A (enExample)
DE (1) DE19619143B4 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6675709B2 (en) * 2000-02-25 2004-01-13 Marco Corti Bar for supplying fluid detergent mixture in equipment for the automatic cleaning of printing machine cylinders
US20200039207A1 (en) * 2016-10-24 2020-02-06 Shuhou Co., Ltd. Activation device for a printing blanket and printing method using a printing blanket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE205783T1 (de) * 1997-11-14 2001-10-15 Elettra Srl Vorrichtung zum zuführen von flüssigem reinigungsmittel
DE10210563B4 (de) * 2002-03-09 2007-04-19 Kba-Metronic Ag Gummituchwascheinrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525982A (en) * 1948-04-27 1950-10-17 Addressograph Multigraph Apparatus for cleaning printing surfaces in offset printing machines
US3094068A (en) * 1960-03-03 1963-06-18 Gericke Erich Arrangement for cleaning printing ink, dirt or the like from cylindrical surfaces in a printing press
US3422758A (en) * 1967-03-27 1969-01-21 Addressograph Multigraph Blanket cleaner for rotary duplicating machine
DE2804801A1 (de) * 1978-02-04 1979-08-09 Baldwin Gegenheimer Gmbh Gummituchwaschvorrichtung
US4344361A (en) * 1979-04-19 1982-08-17 Baldwin-Gegenheimer Corporation Automatic blanket cylinder cleaner
US5509353A (en) * 1994-06-08 1996-04-23 Shimizu Seisaku Kabushiki Kaisha Drum cleaning apparatus for printing machine
US5519914A (en) * 1995-08-01 1996-05-28 Egan; Ronald G. Contact type automatic roll cleaner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525982A (en) * 1948-04-27 1950-10-17 Addressograph Multigraph Apparatus for cleaning printing surfaces in offset printing machines
US3094068A (en) * 1960-03-03 1963-06-18 Gericke Erich Arrangement for cleaning printing ink, dirt or the like from cylindrical surfaces in a printing press
US3422758A (en) * 1967-03-27 1969-01-21 Addressograph Multigraph Blanket cleaner for rotary duplicating machine
DE1611191A1 (de) * 1967-03-27 1970-11-05 Addressograph Multigraph Reinigungsvorrichtung fuer die Zylinder von Druckmaschinen
DE2804801A1 (de) * 1978-02-04 1979-08-09 Baldwin Gegenheimer Gmbh Gummituchwaschvorrichtung
US4344361A (en) * 1979-04-19 1982-08-17 Baldwin-Gegenheimer Corporation Automatic blanket cylinder cleaner
US5509353A (en) * 1994-06-08 1996-04-23 Shimizu Seisaku Kabushiki Kaisha Drum cleaning apparatus for printing machine
US5519914A (en) * 1995-08-01 1996-05-28 Egan; Ronald G. Contact type automatic roll cleaner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6675709B2 (en) * 2000-02-25 2004-01-13 Marco Corti Bar for supplying fluid detergent mixture in equipment for the automatic cleaning of printing machine cylinders
US20200039207A1 (en) * 2016-10-24 2020-02-06 Shuhou Co., Ltd. Activation device for a printing blanket and printing method using a printing blanket
US10899123B2 (en) * 2016-10-24 2021-01-26 Shuhou Co., Ltd. Activation device for a printing blanket and printing method using a printing blanket

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Publication number Publication date
DE19619143A1 (de) 1997-11-13
JPH1044383A (ja) 1998-02-17
DE19619143B4 (de) 2005-03-17

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